电子束步进重复照相机
electron beam image repeater
光学步进重复照相机
optical step and repeat camera
optical mask stepper
optical image repeater
步进重复照相术
step and repeat photography
多机进相协调
harmony of lead phase in the grid
多相多重
multiphase and multiple configuration
话路多路复用器
voice channel multiplexer
通用线路多路复用器
ULM Universal Line Multiplexer
步进重复倍增
step and repeat multiplication